Steve/ahajjiah, A guaranteed simple lift off process using any positive photo resist dimensions of below 0.1 micron rock solid production process with no painful variables and side walls with a 22 degree overhang. Let me know if you want to run free tests and get technical papers on the process. We have also run resists as thick as 40 microns for copper plating up in this case vertical side walls. Bill Moffat, CEO Yield Engineering Systems, Inc. 2185 Oakland Rd., San Jose, CA 95131 (408) 954-8353